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Infineon Technologies CY15E004J-SXAT
- Part No.:
- CY15E004J-SXAT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY15E004J-SXAT.pdf
- Description:
- IC FRAM 4KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,463
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Product details
Overview
CY15E004J-SXAT from Cypress Semiconductor is a 4-Kbit (512 × 8) automotive-grade serial F-RAM with I²C interface, operating from 4.5 V to 5.5 V over –40 °C to +85 °C. It delivers NoDelay™ writes, 10¹⁴ read/write endurance, and 151-year data retention-enabling reliable nonvolatile logging in engine control units, battery management systems, and ADAS event recorders.
For engineers reviewing the CY15E004J-SXAT datasheet, CY15E004J-SXAT pinout, CY15E004J-SXAT application, or CY15E004J-SXAT equivalent, key selection criteria include I²C bus-speed write capability, absence of write polling, automotive-A temperature compliance, and hardware-compatible replacement for legacy I²C EEPROMs in safety-critical embedded storage.
Technical Context
The CY15E004J-SXAT implements a ferroelectric memory array organized as 512 × 8 bits, accessed via standard two-wire I²C protocol with slave address format 1010b + A2/A1 + PS + R/W. It supports 100 kHz, 400 kHz, and 1 MHz clock frequencies while maintaining full compatibility with legacy EEPROM timing constraints.
Its internal address latch auto-increments after each byte transfer, enabling sequential reads/writes across page boundaries without readdressing. The device contains no internal charge pump or write-cycle timer-writes complete within one I²C byte transfer time, eliminating software polling and system-level latency overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 4 Kbit (512 × 8), enabling compact firmware parameter storage without external address latches |
| I²C speed | Up to 1 MHz-supports high-throughput logging at bus speed without protocol bottlenecks |
| Write endurance | 10¹⁴ cycles-supports >27,000 writes/second continuously for 10+ years in telematics black-box applications |
| Data retention | 151 years at +85 °C-guarantees integrity across full vehicle lifecycle without refresh or backup power |
| Supply voltage | 4.5 V to 5.5 V-matches automotive 5 V rail tolerance and eliminates need for LDO regulation |
| Operating temp | –40 °C to +85 °C (Automotive-A)-qualified for under-hood and cabin ECUs per AEC-Q100 stress requirements |
| Active current | 100 µA at 100 kHz-minimizes microcontroller subsystem power budget impact during frequent sensor logging |
Pinout & Package
8-pin SOIC (Small Outline Integrated Circuit) package, RoHS-compliant, surface-mountable with standard 1.27 mm pitch. Pin 1 marked by notch or dot; top view orientation per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2 | Device select address inputs | Set 2-bit portion of 7-bit slave address (1010bxxR/W); enable up to four devices on same I²C bus without address conflict |
| SDA | Serial data/address bidirectional line | Open-drain I²C bus node with Schmitt-trigger input and slope-controlled output; requires external pull-up resistor |
| SCL | Serial clock input | Master-generated clock; rising edge samples data, falling edge outputs data; includes Schmitt trigger for noise immunity |
| WP | Hardware write protect | Pulled down internally; tie to VDD to lock entire memory map-prevents accidental overwrite during ECU reset or brown-out |
| VSS | Ground reference | System ground connection point; must be low-impedance path to minimize noise coupling into F-RAM core |
| VDD | Power supply input | 5 V nominal supply; powers all logic and ferroelectric array; no internal regulation required |
| NC | No connect | Internally unconnected die pad; must remain floating-no routing or soldering permitted |
Key Features
| Feature | Design Value |
|---|---|
| NoDelay™ write architecture | Zero-latency writes: data committed immediately after ACK-eliminates timeout loops and enables deterministic real-time logging |
| Ferroelectric memory process | 100 trillion cycle endurance vs. EEPROM's ~1M cycles-removes wear-leveling firmware complexity in cyclic data buffers |
| I²C timing compatibility | Supports 100 kHz / 400 kHz / 1 MHz modes with identical timing margins as standard EEPROM-no host driver modification needed |
| Automotive-A qualification | Guaranteed operation across full –40 °C to +85 °C range with validated thermal cycling and humidity exposure per AEC-Q100 |
| Low-power write operation | 4 µA typical standby current and no elevated-voltage charge pump-reduces peak current draw during write bursts |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Storing real-time misfire counts, knock sensor calibration offsets, and fault code timestamps during engine runtime. IC Role / Device Role / Timing Role: Nonvolatile parameter scratchpad with sub-millisecond write commit-ensures crash-dump integrity even during sudden ignition cutoff. Use Value: Eliminates risk of lost diagnostics due to EEPROM write timeouts during power interruption, meeting ISO 26262 ASIL-B data persistence requirements. |
Use Scenario: Capturing pre-crash sensor fusion data (radar + camera sync stamps) at 100 Hz for post-event analysis. IC Role / Device Role / Timing Role: High-frequency cyclic buffer with atomic byte writes-maintains temporal coherence across multi-sensor timestamp streams. Use Value: Enables 10× more frequent logging than EEPROM-based solutions without compromising MCU scheduling or increasing flash wear. |
| Battery Management System (BMS) | Infotainment Telematics Module |
|
Use Scenario: Recording cell voltage imbalance history and thermal gradient profiles across 100+ charge/discharge cycles. IC Role / Device Role / Timing Role: Wear-resistant event logger interfaced directly to BMS microcontroller I²C port-no DMA or buffering required. Use Value: Supports >15-year field life with daily 10,000 write operations-exceeding OEM battery pack warranty duration without degradation. |
Use Scenario: Caching GPS position fixes, cellular network handover events, and OTA update metadata during intermittent connectivity. IC Role / Device Role / Timing Role: Low-power persistent cache co-located with application processor-preserves state across cold boot and sleep mode transitions. Use Value: Reduces boot-time initialization latency by 85% versus flash-based configuration recovery, improving user perceived responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial nonvolatile memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C04C-SSHM-T (Microchip) | 4-Kbit I²C EEPROM with 1M write cycles, 10 ms write time, 10-year data retention at +85 °C | Lacks automotive-A qualification; requires polling and suffers data loss risk during power loss mid-write | Select only for cost-sensitive non-automotive applications where write frequency < 100x/day and ASIL compliance not required |
| FM24V04-G (Cypress) | 4-Kbit I²C F-RAM with 2.7–3.6 V operation, same endurance/retention, but industrial temp range (–40 °C to +85 °C, non-AEC) | Not AEC-Q100 qualified; lacks automotive-specific reliability validation and production traceability | Use where 3.3 V supply is mandatory and automotive qualification is waived-e.g., commercial telematics gateways |
Compared with AT24C04C-SSHM-T and FM24V04-G, the CY15E004J-SXAT uniquely combines AEC-Q100 Automotive-A qualification, 5 V operation, and true bus-speed writes-making it the only drop-in solution for safety-critical automotive ECUs requiring guaranteed nonvolatile write atomicity.
Availability
CY15E004J-SXAT is available at Aetrix Electronics and suitable for engine control units, battery management systems, and ADAS event recorders requiring stable component supply across extended automotive production lifecycles.
Supply support for CY15E004J-SXAT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Cypress Semiconductor (now part of Infineon Technologies) designs high-reliability semiconductor solutions for automotive, industrial, and IoT applications, with deep expertise in nonvolatile memory and microcontroller integration.
The CY15E004J belongs to Cypress's automotive F-RAM product line, engineered specifically to replace EEPROM in safety-critical automotive subsystems where write latency, endurance, and data retention are design-critical constraints.
FAQ
Is CY15E004J-SXAT pin-compatible with standard I²C EEPROMs like AT24C02?
Yes-CY15E004J-SXAT uses an 8-pin SOIC package with identical pinout (VDD, WP, SCL, SDA, VSS, A1, A2, NC) and matches the I²C slave address structure of AT24C02/AT24C04. No PCB redesign is needed for drop-in replacement, though WP functionality differs (active-high vs. active-low in some EEPROMs).
Does CY15E004J-SXAT require external circuitry for I²C bus termination?
Yes-it requires external pull-up resistors on SDA and SCL lines. Recommended values are 2.2 kΩ for 100 kHz, 1 kΩ for 400 kHz, and 4.7 kΩ for 1 MHz operation, calculated per I²C bus capacitance and rise-time requirements specified in the datasheet.
Can CY15E004J-SXAT operate reliably during automotive load dump events?
It is rated for 4.5 V to 5.5 V operation and includes internal power-on reset, but does not integrate load dump protection. System-level TVS diodes and input filtering must be used upstream to clamp transients above 5.5 V, as specified in ISO 7637-2 Pulse 5a.
What is the maximum supported I²C bus capacitance for 1 MHz operation?
The CY15E004J-SXAT supports up to 200 pF total bus capacitance at 1 MHz, per AC switching characteristics in Rev. *B datasheet. Exceeding this limit causes SCL rise-time violations and communication failures-PCB layout and stub length must be controlled accordingly.
CY15E004J-SXAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- F-RAM™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FRAM
- Technology:
- FRAM (Ferroelectric RAM)
- Memory Size:
- 4Kbit
- Memory Organization:
- 512 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY15E004J-SXAT FAQ
1.How can I place an order for CY15E004J-SXAT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY15E004J-SXAT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY15E004J-SXAT reliable?
The price and inventory of CY15E004J-SXAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15E004J-SXAT is usually 5 days.
3.What payment methods are accepted for CY15E004J-SXAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15E004J-SXAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY15E004J-SXAT?
CY15E004J-SXAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY15E004J-SXAT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY15E004J-SXAT?
For technical support, including CY15E004J-SXAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15E004J-SXAT requirements.
6.How does Aetrix verify that CY15E004J-SXAT is sourced from the original manufacturer or authorized distributors?
All CY15E004J-SXAT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY15E004J-SXAT meets industry standards.
7.What is the process for return or replacement of CY15E004J-SXAT?
All CY15E004J-SXAT units undergo pre-shipment inspection (PSI). If there is an issue with CY15E004J-SXAT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY15E004J-SXAT part is unused and in its original packaging.
Return procedure for CY15E004J-SXAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY15E004J-SXAT Tags
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M24C02-WMN6TP
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AT21CS01-STUM10-T
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